test(HomeLoggedIn): add test for 100% coverage

frontend/__tests__/unit/components/HomeLoggedIn.test.jsx

@@ -1,9 +1,11 @@
 import { render, screen } from "@testing-library/react";
 import HomeLoggedIn from "components/HomeLoggedIn";
-import { Router } from "react-router-dom";
+import { MemoryRouter, Route, Router } from "react-router-dom";
 import { createMemoryHistory } from "history";
 import { testNetwork } from "../../data/network";
+import userEvent from "@testing-library/user-event";
 import API from "utils/API";
+import { act } from "react-dom/test-utils";
 import MockAdapter from "axios-mock-adapter";
 
 describe("HomeLoggedIn", () => {
@@ -43,4 +45,44 @@ describe("HomeLoggedIn", () => {
 
     expect(container).toMatchSnapshot();
   });
+
+  it("creates a new network when the 'Create A Network' button is clicked", async () => {
+    jest.spyOn(Math, "random").mockReturnValue(0.5);
+    jest.spyOn(Date, "now").mockImplementation(() => 1487076708000);
+
+    let mock = new MockAdapter(API);
+    const user = userEvent.setup();
+    let testLocation;
+    const networkId = "testid";
+
+    // For the API call with the initial render
+    mock.onGet("network").reply(200, []);
+
+    // For the API call after the 'Create A Network' button is clicked
+    mock.onPost("/network").reply(200, { config: { id: "testid" } });
+
+    await act(async () => {
+      render(
+        <MemoryRouter initialEntries={["/"]}>
+          <Route path="/">
+            <HomeLoggedIn />
+          </Route>
+          <Route
+            path="*"
+            render={({ location }) => {
+              testLocation = location;
+              return null;
+            }}
+          />
+        </MemoryRouter>
+      );
+    });
+
+    const createANetworkButton = screen.getByRole("button", {
+      name: "Create A Network",
+    });
+
+    await user.click(createANetworkButton);
+    expect(testLocation.pathname).toBe("/network/testid");
+  });
 });